bootloader.css

html {
    background-color: white;
    height: 100vh;
    width: 100vw;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}


.lds-ring {
    display: inline-block;
    position: absolute;
    width: 64px;
    height: 64px;
    margin-top: -60px;
}

.lds-ring div {
    box-sizing: border-box;
    display: block;
    position: absolute;
    width: 51px;
    height: 51px;
    margin: 6px;
    border: 6px solid #135f7f;
    border-radius: 50%;
    animation: lds-ring 1.2s cubic-bezier(0.5, 0, 0.5, 1) infinite;
    border-color: #135f7f transparent transparent transparent;
}

.lds-ring div:nth-child(1) {
    animation-delay: -0.45s;
}

.lds-ring div:nth-child(2) {
    animation-delay: -0.3s;
}

.lds-ring div:nth-child(3) {
    animation-delay: -0.15s;
}

@keyframes lds-ring {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

#loadingAngularContent {
    width: 100%;
    color: #666;
    height: 100%;
    padding: 0;
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.loaderAngularContent {
    opacity: 0.5;
    display: flex;
    justify-content: center;
    padding: 5px;
    height: 20px;
    margin: 10px;
    line-height: 20px;
    font-weight: bold;
    font-size: 2em;
    text-align: center;
}

.loaderAngularContentText {
    font-family: Roboto, "Helvetica Neue", sans-serif;
}